Commit 88039815 authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Jaroslav Kysela
Browse files

[ALSA] cmipci: check that the legacy MIDI port works 



Check that the UART_EN bit actually enabled the MPU-401 port.
Apparently, C-Media thinks that it is a good idea to be paranoid here.

Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent c78c950d

sound/pci/cmipci.c

+7 −0
Original line number Diff line number Diff line
@@ -3012,6 +3012,13 @@ static int __devinit snd_cmipci_create(struct snd_card *card, struct pci_dev *pc 
			snd_cmipci_write(cm, CM_REG_LEGACY_CTRL, val);

			/* enable UART */

			snd_cmipci_set_bit(cm, CM_REG_FUNCTRL1, CM_UART_EN);

			if (inb(iomidi + 1) == 0xff) {

				snd_printk(KERN_ERR "cannot enable MPU-401 port"

					   " at %#lx\n", iomidi);

				snd_cmipci_clear_bit(cm, CM_REG_FUNCTRL1,

						     CM_UART_EN);

				iomidi = 0;

			}

		}

	}